Variable-speed mechanism.



PATENTED JAN. 8, 1907.

L. THIEL.

VARIABLE SPEED MECHANISM.

APPLIOATION FILLED JULY 17 1906.

2 SHEETS-SHEET 1. a,

, Wilmaooao No. 840,670. PATENTED JAN. 8, 1907.

L. THIEL. VARIABLE SPEED MECHANISM.

APPLICATION FILED JULY17; 1906.

2 SHEETS-SHEET 2.

' 3a mmtoz To all whom it may jemwern:

tools. l v i 7 The principal object of my invention-relates to the shifting of tumbler niechenisni Be it known that I, LotnsTnrnL, a citizen oftheUnited States; residing at Cincinnati, in the county of Hamilton and State of Ohio,

- have invented certain new and useful lmproveme'nts in Variable-Speed Mechanism, of which the following is a specification. v 1 "My invention relates to variable -spced mechanism'used in connection with machinefor; accomplishing changes of speed from it drivingtoedriven shaft.

f The features ot" the invention are more fully set forth nthe description of the accompanying drawings, forming apart of this specification, in whioh Figure '1 is a front elevation of myimproved speed-box as applied to a milling machine. Fig. 2 is a side elevation thereof,

' Fig. 3 is an enlergedsection on line w 90, Fig.

' of the shafts and gearing.

Fig. 4 is a. section on line 20 w, Fig.3. Fig. 5 is a'seetioii'on line o oQFig. 3. Fig. 6 is a 'section on line zz; Fig. '3.

s Fig. illustrates the generztl organization 1 represents a box inclosing the-parts, to be hereinafter Gnscribed. i p

2 represents :the driving-slmft, suitably journaled in hearings in the box end having thereon a driving-wheel :3. (See also Fig. 5). This Wheel 3- is shown ass. sprocket-wheel and: is driven by a sprocket-chain (not shown) from the: meingdrive ofthe machine. On.

shaft 2. is'inou1ited a'sleeveadapted to turn with and slideon shaft 2, said. sleeve bediameter.

'4' 7'represents at second shaft journaled in ing provided with two'gesrs 6 of different the boxand which for convenience IWillc-all "a 'cor'ie shaft." On shaft 7 is fixed a gearwheel 8 having rnelongated sleeve ,9, upon which sleeve are fixed the successive geer-;

wheels of the cone 10, 11, 12, 13 141, respectively'.

15 represents a sleeve fixed to shaft having the gear-teeth 16 and] 7 cut on each end thereof, and 18 represents e gennwheel fixed to the sleeve 15. The sleeve 4 may he slid so as toengege the gear-wheel 6 with the cone gear-Wheel 1.4-. for one rate of drive and also adapted to'he slid tointerniesh the gear- Wheel 5with the gear-wheel 18 for another rink, ser n s nfrsnr Enron isyrn snlor cities-N TL OHIO ASSIGNOR 'lO THE CINCINNATI Mimi me MAQHINEQOMPA'NY. or CINCINNATI, OHIO, AooRPoRAT onff Specification of Letters Patent. Application sea Ju1 '1v,19o6. erial lie- 326,611.

. y X, J11 change of speed to the cone. To slide sleeve -thecoi1e of shnit 7, I provide astud-s Patented 58.11. 8,191)

4t, 1 journal a studshaft 19 in bearings formed in the casing or box 1 and in bearings formed in an index plete 20-, fixed to the:

body of the machine, within which the boio or casingis secured. Shaft 19.i's provided;

with serenkdmndle 21. ,heving detent niech anism 22 to engage the segnientelly arranged-\ orifices 23in the plate 20. On the innergendl 2. of shaft. 19 en'srin 24 is fixed; havingefork? 25 swiveled in its free end. l he box 1 is. pro-# 6 5 vided witl'ien opening 26, through whichgthei lork. 25 projects, the inner end of. thepfork straddling the gear-wheel 5,so es to-shiftthe, sleeve 5;, with its contained gears, to diii'erent; positions} In order to utilize the shiftiiigiofi 17o sleeve 4; to give another change of speed'tof;

laft 21%. upon whichar'e fixed two gear-wheels of-idi fer e nt diameter 28 29, respectivelv adepte to rotate together. Gear-wheel 28 inter-. meshes with a pinion 30 on a studshafti31 end-pinionSO intermeshing with the gear-.- wheel 16 onthe cone-sheft 7. Thereforeflif; sleeve 4 be shifted still further to the left, so I as to disengage gear-wheel 5 from the gear-1 wheel IS genI Wheel 5 can be intermeshd with gearrwheel .29 and a third change of; speml imparted from shaft. .Z'to', the cone- M shaft '32 represents a tnnnbler-fre nr e provided with sleeve pro'ections 33 34, et iesch ;$5. 1end projecting throng and 'j'ournaling in them' ox. I he: 35 represents a driven shaft j ourneled with in the sleove'projections '33 34 0f the -tu bier-frame 32, thus foiininga: center for. th tumbler-frame. l f 36 represents a pinion slide blymounted, upon shaft 35, adapted to-rotetethe se ne said pinion being provided withv a'sleeve 37 upon which a. shifting sleeve 38: is fixed. w 39 represcntsn swinging shaft fixedfto, limbs of the tumbler-frame, upon which is loosely mounted the gear-wheel 40, int meshing with thepinion 36.- Y 4'1 represents'av lute fixed to the pinion3 forming means w ierehywhenv the pinion.36 is shifted to the right or left will carry with it the gear-wheel 40. l p

The mechanism for sliding thetumblergears 36 40 consists of the following instrunientslities: 42 represents a. rock-shaft journaled in the bottom of the box and indexing plate, having an arm 43 fixed to one end I stud-shaft 53 the free end of said lever bein i thereof, said arm 43 being provided with a plate 44, (see dotted lines, Fig. 3,) swiveled in the free end of arm 43 and engaging into the groove 45 of the sleeve 38. Upon the opp0- site end of shaft 42 a crank-handle 46 is provided, having detent mechanism 4' 7, engaging with the segmentally-arrang'ed orifices 48 of the indexlate 20. The orifices 48 represent the di erent lateral positions ofadjustment of the tumbler-gears relative to the ste sof the cone. I V

' he mechanism for rocking the tumbler mechanism for inter-meshing gear-wheel 40 with any one-0f the gears of the cone consists of the following instrumentalities, (see Figs. 3 and 4:) 49 represents a collar .fixed upon the sleeve 34 of the tumblerframe 33, said collar being provided-with teeth 50,

flan e 52, forme stu -shaft 53 being journaledwithin suitable bearings of the'box 1 and projecting through the same. 54 represents a lever fixed'to-said provided with detent' mechanism 55, ada te to engage with the segmentally-arrange' ori fices 56 on the end portion'of the box 1, -the osition of these orifices 56 re resenting diferent vertical steps into whic 'the tumbler gear 40 can be brought for enga ing thesame with one of the cone of gears. Cl hus itwill be .seen that by mani ulati'onjof lever 54 the stud-shaft 53 an toothed flange 52 are 39 with its gear 40. g, From the foregoing description it will be understood that by manipulating the lever 21 ,three different rates of drive may be im'part-- ed to the cone-shaft 7. By mam ulating the lever. 46 the tumbler-gears can e ad'u'sted latera ly upon the driven shaft 35 an tumbler-shaft 39, respectively, to bring the tumbler-gear 40 opposite anyselected gear of the cone,;and by manipulating the lever 54 the tumbler mechanism and segmental rocking mechanism may be adjusted to bring the tumbling-gear wheel 40 into engagement with the selected'gear-wheel of the cone, It will be seen that by "this construction the tumb1ergear is positively su ported through the use of an elongated tumb er-frame, thereby forming a very durable and powerful construction.

Having described my invention, I claim- 1. In a variable-speed device, a box, a coneshaft j -a;, series of different-diameter earwhee Mil age, a -'sec'ond, shaft-,1 roe 'ng tially as described.

/ 2. In a variable-speed device, a box, a cone and, tumbler-gear system' suitably mounted therein, the said tumbler comprising a frame journaled inthe box, a central shaft and a swinging snaft' journaled in the frame, there being intermeshing gear-wheels on said shafts adapted to be slid along to impart a drive from the cone-shaft to the central shaft, a rock-shaft, andrnechanismcoopemting therewith for slidin said interrneshing gear-wheels in unison, sai rockingwframe having a hub formed with gear-teeth, a stud-shaft jour- 'naled' in the casing having a member Within the casing formed with gear-teeth intermeshing with the said. hub-teeth, and a lever on the outer cndof said stud-shaft whereby said shaft may be rocked, substantially as described. rocked, correspondingly rocking the tumbler I frame 33, carrying w thit the tumbler-shaft 3'. In avariable-speed device, a box, a coneshaft, different diameter gear-wheels thereon,

a tumbler-frame having end hubs journaled the end of the frame, intermes ung gearwheels on the said central shaft and swinging shaft adapted to slide thereon in unison, a rock shaft projecting through the casing and having connections for adjustably sliding said intermeshing ear-wheels on said shafts, one

of the hubs of the frame bein formed with geal teeth, a stud shaft journa ed in the easing having on the inside a member formed with-gear-teeth meshing with the teeth of said hub, and a lever fixed to the outer end'of said stud shaft for adjustably rocking the said frame, substantially as described.

In testimony whereof I have hereunto set my hand.

' LOUIS THIEL.

Witnesses:

OLIVER B. KAIsaR, LEO ODoNNnLn. 

